Actually there is  
 
The 70-200 L has 2 IS modes, mode 2 is for when your subject is fast moving so the AF point locks onto the subject and blurs everything else during panning and subject tracking making for sharper subject focus! mode 1 is for standard IS shots where you're moving for example (camera shake/helichopper etc)
	
		
			
		
		
	
				
			 
 The 70-200 L has 2 IS modes, mode 2 is for when your subject is fast moving so the AF point locks onto the subject and blurs everything else during panning and subject tracking making for sharper subject focus! mode 1 is for standard IS shots where you're moving for example (camera shake/helichopper etc)
 
	 
  
 
		 
 
		
 
 
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